Komatsu Engine Washer Tension Pulley 01653-21012

Komatsu Engine Washer Tension Pulley 01653-21012 is a Komatsu engine replacement part listed by 19PARTS for engine-section lookup, hub navigation, and part-number verification.

Product overview

Part number 01653-21012 is listed as Washer Tension Pulley. Search also by the no-dash alternate number 0165321012.

Engine book references

This part appears in Komatsu engine parts book paths such as:

• ENGINES / S4D120-11S S/N 59235-UP / COOLING AND ELECTRICAL SYSTEMS / ALTERNATOR AND MOUTING(35A)(COLD TERRAIN SPEC.)(#61639-) (523)
• ENGINES / S6D140-1A-F S/N 10001-UP / ENGINE / CYLINDER BLOCK GASKET KIT (WEXTREME COLD TERRAIN SEPC.)(#20519-) (A8121-B4A6)
• ENGINES / S6D140-1A-F S/N 10001-UP / ENGINE / CYLINDER BLOCK GASKET KIT (WITH POWER TAKE OFF)(#19029-) (A8120-B4A6)
• ENGINES / S6D140-1A-F S/N 10001-UP / ENGINE / CYLINDER BLOCK GASKET KIT (WITHOUT POWER TAKE OFF)(#19029-) (A8122-B4A6)
• ENGINES / S6D140-1G-F S/N 10001-UP / ENGINE / CYLINDER BLOCK GASKET KIT(#19211-) (A8116-B4A6)
• ENGINES / S6D140-1X-F S/N 10001-UP / ENGINE / CYLINDER BLOCK GASKET KIT(#19040-) (A8118-B4A6)

This part appears in 62 Komatsu engine book paths in our reference data.

Verification note

Always confirm final fitment by engine model, serial range, diagram callout, and part number before ordering. Hub references are provided to help buyers find the right engine section and related parts faster.

Keep Ops Moving

19PARTS organizes Komatsu engine parts around searchable engine-model hubs so rebuild shops, equipment owners, and fleet teams can identify parts and keep repairs moving.